Green-mode flyback pulse width modulation apparatus

摘要: A green-mode flyback pulse width modulation apparatus adopting a bipolar transistor structure IC process is used in power supply. An oscillator circuit outputs periodic clock signal to control terminal of switch through an amplifier for periodically turning on the switch. latch connected circuit, and feedback supply pulling down potential at response generated by turn off continue suspending operation when light load, will resume output till drops, so as achieve function.